What you need to look for is a DVD player that is (a) designed for use in North American and (b) is multiregion so that it will play DVDs from Europe and (c) is multisystem so that DVDs from Europe which uses the PAL broadcast system will display properly on a North American TV which uses the NTSC broadcast system.

I recommend you do a web search on the words "multisystem multiregion DVD player" because forum rules don't allow me to give you a direct link to a product you could buy.